Apparatus for treating paraffine-oil



(No Mudel.) I

' H. NEAHOUS. Apparatus forTreating Paraffine Oil s.

No."231,840 Patented Au g.-3l, 1880.-

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INVENTOR WITNESSES I A gm may BY z ATTORNEYS:

NTTED STATES PATENT FFlCE-O APPARATUS FOR TREATING PARAFFlNE-OIL.

SPECIFICATION forming part of Letters Patent No. 231,840, dated August 31, 1886.

Application filed J niy 16, 1880. (No model.)

To all whom "it may concern Be it known that I, HERMAN NEAHOUS, of Sharpsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and Improved Apparatus for Treating Par afline-Oils, of which the following is a specification.

In the ordinary method of treating frozen parafliue-oil for the separation of the oil from the wax the frozen paraffine is inclosedin small cloths and folded and laid on plates in tiers of from twenty to twentyfive packages, and by the time the press is filled the frozen oil becomes warm, and consequently the crystallized wax melts and runs out as a liquid with theioil, and when the press is run down the wax in the cloths still contain oils, which renders it necessary for the waxitself to be again folded in cloths and again submitted to the action of the press, which process involves considerable labor, time, and waste of wax; and

' the wax is by this process rarely completely freed from the oil, while the oil always contains some wax, which latter injures the lubricating qualities of the oil.

The object of this invention is to .provide a process and apparatus that are free from the imperfections of the old method, and will make a thorough separation of the wax and oil in a most economical manner.

The invention consists of a cylindrical press provided with proper outlets, and having a filtering piston or plunger and a filtering cap or cover; and the process consists, essentially, in introducing the frozen paraffine in bulk, without wrapping-s, between the top of the plunger and the cap or cover.

Figure 1 represents a vertical sectional elevation of the press on line 00 a, Fig. 2. Fig. 2 represents a vertical sectional elevation on line 3 3 Fig. 1. Fig. 3 is a plan of the reverse of the cap or cover of the press with a portion broken away to exhibit other parts. Fig. 4. is a plan of the top of the piston. Fig. 5 is a cross-section on line 2 2, Fig. 1.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the press-cylinder, provided with an enlarged (preferably rectangular) top, A, on which is hinged the near its bottom for the admission of the air or liquid that serves, under pressure, to force the piston or plunger B upward. This piston B is hollow and cylindrical, and a post, cl, rises centrally from its bottom to support the filtering-top B of said piston'B. This pistontop 13 is a circular cap, f, having perforations 9 made through its top for the passage of the oil, and having fastened on its top a series of raised ribs, 71 that are designed to hold up the filtering-cloth k, that is stretched over them,

so as to prevent said cloth is from closing the perforations g.

B is the flanged metallic packingring that fits over the top B, and is held in place by the screws l l, that pass down through it and into the lugs m, that project inward from the inner face of the piston B. O is a valve-ring set about the center of said piston B, and having in it an orifice, a, corresponding with an orifice, 0, in the piston B, so that when in operating the device the two orifices a o are brought opposite each other, and opposite one of the tubes 0 b 1), oil will escape from the said piston B. Above and below this ring 0 the pis ton B is provided with ordinary elastic pack- 8o ing-rings p p, as shown. When no discharge from the piston B is desired during the operation the ring 0 may be turned so as to close the piston-orifice 0.

The rectangular cover D has a grating, D, 8 5

fitted in its top, and over the lower face of this grating D a filtering-cloth, q, is stretched and held in place by strips r, of wood or other material, that are forced between the sides of the grating D and the cover D, and said coverD 0 is provided with a lateral discharge-pipe, D, for the escape of oil that is forced upward by the piston B through the filtering-cloth. q. Below this filtering-cloth q, and in contact with the face thereof, a scraper, E, extends 5 across the cover D, and is held in place and moved across the face of the cloth g by the two screws E, that pass through stufiing-boxes s h I. I I I if on the front of the cover D and through said scraper E, and are pivoted in the bosses t in the rear side of said cover D.

F F are clamps designed to hold said cover D firmly closed.

To operate this device the piston B is pushed nearly to the bottom of the press-cylinder A, which cylinder A is then filled from the top with the frozen paraffineoil to be treated. The cover D is then fastened down, and Water or air is forced under pressure below the piston B through the pipe 0, thereby causing the said piston B to rise and compress the contents of the press, so that the expressed oil will flow in one direction, through the filtering-cloth 70, into the piston B, and in the other direction through the filteringmedium q and out through the"discharge-pipe D, and as said piston B fills and rises the ring and piston-orifices n 0 respectively come opposite the tube b, when the oil above said orifice 0 of the piston B is forced out through the tube 1), and as the process continues the escape of the oil from the piston B is cut ofi' until the said orifices n 0 come opposite the tube 1), and again out off by the inner face of the cylinder A until said orifices a 0 are brought opposite the tube 1;, through which the accumulated oil is discharged.

The numberof discharge-tubes b may be unlimited, and the ring 0 and orifices a 0 may be arranged on a higher or lower level.

During the process the contained wax is likely to crystallize and adhere to the filtering-cloth q, and thereby interfere with the filtering of the oil, and in order to remove said wax the scraper E is moved across the face of said filter g by turning the screws E.

At the close of the operation the cover D may be thrown back and the accumulated wax removed from the cylinder A.

This device is adapted for pressing other substances than frozen paraffine-oil, and when the expressed liquid requires further filtering the cover .D will be made higher or deeper, so that charcoal or other filtering medium may be placed above the filtering-cloth q.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A press for treating paratfine-oils, constructed substantially as herein shown and described, containing the following elements a hollow filtering-piston and a filtering-cover, as set forth.

2. The combination, with the press-cylinder A, provided with suitable discharge-pipes, of the hollow piston 13, having lateral orifice 0, and provided with pertoratcd and ribbed top B and filtering medium 70, substantially as herein shown and described.

' 3. The combination, with the press-cylinder A, of the cover D, having discharge-pipe D, and provided with grating D and filteringcloth (1, substantially as herein shown and described.

HERMAN NEAHOUS. Witnesses A. F. RIDDLE, WM. SMITH. 

